1251452430973 has 2 divisors, whose sum is σ = 1251452430974. Its totient is φ = 1251452430972.

The previous prime is 1251452430971. The next prime is 1251452430989. The reversal of 1251452430973 is 3790342541521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 723523762404 + 527928668569 = 850602^2 + 726587^2 .

It is a cyclic number.

It is not a de Polignac number, because 1251452430973 - 2¹ = 1251452430971 is a prime.

It is a super-2 number, since 2×1251452430973² (a number of 25 digits) contains 22 as substring.

Together with 1251452430971, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1251452430971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625726215486 + 625726215487.

It is an arithmetic number, because the mean of its divisors is an integer number (625726215487).

Almost surely, 2^{1251452430973} is an apocalyptic number.

It is an amenable number.

1251452430973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251452430973 is an equidigital number, since it uses as much as digits as its factorization.

1251452430973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 1251452430973 in words is "one trillion, two hundred fifty-one billion, four hundred fifty-two million, four hundred thirty thousand, nine hundred seventy-three".